大般涅槃經義記 2.184

2.184

The third [part] above extensively explained the four marks; the fourth [part] below summarizes them after having explained them. "The bodhisattva thus reveals the four marks" summarizes with respect to the person. These four are the virtues of the bodhisattva who is able to reveal them, and therefore it summarizes with respect to them. "This is called the meaning of causes and conditions within the Mahāyāna Great Nirvāṇa" specifically summarizes with respect to the teaching; because these four marks are spoken in the Nirvāṇa Sūtra, it summarizes with respect to it. In principle it should have summarized them all, but because the explanation of conditions comes at the end, it specifically summarizes it alone, omitting the other three.